Display Filter Reference: Link Access Procedure, Channel D (LAPD)
Protocol field name: lapd
Versions: 1.0.0 to 4.0.3
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| Field name | Description | Type | Versions |
|---|---|---|---|
| lapd.abort | Abort | Boolean | 1.10.0 to 1.10.14 |
| lapd.abort.expert | Formatted message | Label | 1.12.0 to 4.0.3 |
| lapd.address | Address Field | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.checksum | Checksum | Unsigned integer (2 bytes) | 1.2.0 to 4.0.3 |
| lapd.checksum.status | Checksum Status | Unsigned integer (1 byte) | 2.2.0 to 4.0.3 |
| lapd.checksum_bad | Bad Checksum | Boolean | 1.2.0 to 2.0.16 |
| lapd.checksum_bad.expert | Bad FCS | Label | 1.12.0 to 4.0.3 |
| lapd.checksum_good | Good Checksum | Boolean | 1.2.0 to 2.0.16 |
| lapd.control | Control Field | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.control.f | Final | Boolean | 1.0.0 to 4.0.3 |
| lapd.control.ftype | Frame type | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.control.n_r | N(R) | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.control.n_s | N(S) | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.control.p | Poll | Boolean | 1.0.0 to 4.0.3 |
| lapd.control.s_ftype | Supervisory frame type | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.control.u_modifier_cmd | Command | Unsigned integer (1 byte) | 1.0.0 to 4.0.3 |
| lapd.control.u_modifier_resp | Response | Unsigned integer (1 byte) | 1.0.0 to 4.0.3 |
| lapd.cr | C/R | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.direction | Direction | Unsigned integer (4 bytes) | 1.0.0 to 4.0.3 |
| lapd.ea1 | EA1 | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.ea2 | EA2 | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.sapi | SAPI | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |
| lapd.tei | TEI | Unsigned integer (2 bytes) | 1.0.0 to 4.0.3 |